Heating-drum



No. 609,935. Patented Aug. 30, I898. L. W. HOLLAND.

HEATING DRUM.

(Application filed Dec. 81, 1897.)

(No Model.)

LUTHER WV. HOLLAND,

NITED STATES;

OF FULTON, MISSOURI.

H EAT-l N G D R U M SPECIFICATION forming part of Letters 1 atent No. 609,935, dated August 30, 1898. Application filed December 31, 1897. serial No. 664,965. (No model.)

To all whom it may concern:

Be it known that I, LUTHER W. I-IOnLANi),

a citizen of the United States, residing at Fulton, in the county of Oallaway and State of Missouri, have invented a new and useful Heating-Drum, of which the following is a specification.

This invention relates to improvements in heating-drums; and the object that I have in view'is to provide an improved construction by which waste heat and products of combustion are utilized for heating air to warm a room or apartment.

A further object is to so construct and arrange the various parts ,of the structure as to divide the interior of the drum in amanner to utilize the full energy of the latent heat contained in the products of combustion and insure a large area of heatingsurface for contact with the air.

A further object that I have in View is to so arrange the several parts as to secure the circulation of the airto good advantage through the drum and to provide for the ready cleaning of the interior from accumulations of soot and the precipitates of combustion.

W'ith these ends in view the. invention consists in the novel construction and ar-' rangement of parts, which will be hereinafter fully described and claimed.

To enable others to understand my invention, I have illustrated the preferred embodiment thereof in the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a perspective View of a heatingdrum constructed in accordance with my invention. Fig. 2 is a vertical transverse sectional view taken centrally through the drum and the heating-chamber: therein. Fig. 3 is a horizontal sectional view on the plane in dicated by the dotted line a a of Fig. 2.

Like numerals of reference denote like and corresponding parts in each of the several figures of the drawings.

1 designates the casing of my improved heating-drum. 2 is the bottom head thereof, and 4: is the upper head. In the practical manufacture of my heating drum I prefer to make the heads 2 4: of cast metal and the casing 1 of sheet metal; but I do not desire to strictly limit myself to the precise materials used in the annular wallof the casing 1.

the manufacture of the drum. The lower head 2 is provided with integral depending feet 3, adapted to rest upon the floor and'support the drum in an elevated position for the circulation of air beneath said drum, and the upper head 4 is provided with the pipe holes or nipples 5 6, which are situated or formed in said upper head on opposite sides of the central air-heating chamber forming a part of the drum. These upper and lower heads are preferably provided with annular flanges 1-1, arranged concentric with each other and adapted to receive the edges of the casing 1, and said flanged heads and the casing are united together by rivets, bolts, or other equivalent fastenings.

In my improved drum I provide a central air-heating chamber, which is arranged vertically within the drum and transversely across the same from side to side thereof, the lower part or foot of said central airheating cham bottom M1110. .The partitions 7 8 are arranged vertically within the casing 1, on opposite sides of the vertical center thereof, and saidpartitions extend entirely across the in terior of the drum or casing, so as to have their vertical edges abut against or join with Th'epartitions are arranged parallel to each other and they form between themselves and in connection with the casing l the central air-chamber 9. The bottom wall 10 to the air-chamber is joined to the lower edges of the parallel walls 7 8 on a lin'e'above the lower head 2 of the heating-drum, and said; partitions do not extend through the dr u m-casing entirely down to the bottom head thereof, so that a space is left between the lower part of the chamber 9 and the bottom of the heating-drum, which space is indicated by the numeral 15. I

In connection with the described construction of the drum-casing and the vertical central air-chamber 9 therein I employ a plurality of horizontal flues 11. These fines are arranged radially to extend across the space or chamber between the drum-casing and the central air-chamber 9, and said fines open at their ends into said air-chamber 9 and through the annular casing 1 of the drum. I employ a large number of these radial horizontal fines to connect the central air-chamber 9. with the outeratmosphere,and said fines have their ends suitably secured in the walls or partitions 7 8 of the air-chamber 9 and the annular casing 1 of the heating-drum, as, forinstance, by flanging the end edges of the fines. These radial fines serve to divide the interior space or chamber of the casing -1, and they impede the progress of the smoke and products of combustion as the same circulate from one pipe hole or nipple 5 to the other pipe hole or nipple 6 of said drum. The described arrangement of the radial air-fines 11 secures a large heatingsurface within the smoke circulation space of the casing 1, and said fines or tubes also provide for the circulation of air from the surrounding atmosphere into the central chamber 9, whereby air is drawn into the tubes and the central chamber to be heated by contact with the walls of the radial tubes or fiues 11 and the central air-chamber 9.

The employment of the parallel plates to extend entirely across the drum and form the transverse air-heating chamber enables an increased number of air-heating tubes to be used. These horizontal tubes may thus be and are arranged in different vertical and horizontal planes, and thus the heat and products of combustion may circulate freely around each of the air-tubes without having the course thereof deflected by contiguous or adjacent tubes. The air-tubes and the walls or plates forming the air-chamber are all eX- posed to the products of combustion which circulate through the drum, all the surfaces of said tubes and plates or walls are accessible to the heat, and a large area is presented to the action of the products of combustion.

I To establish a circulation of air through the central air-chamber 9, I provide an air-inlet tube 12, which is arranged in a horizontal position at the lower part or foot of the heatingdrum. This air-inlet tube 12 extends in the line of the chamber 9 from the latter to and through the casing 1 of the heating-drum, and said tube 12 thus establishes an ingress for the air into the lower part of the chamber 9.

As is well known, the smoke and products of combustion from a stove, furnace, or other heater carry soot and other precipitates, and after the drum has been in use for some time it is found that the passage 15 at the lower end of the air-chamber 9 is liable to be choked or clogged by the deposits of soot, &c., in the circulating-chamber formed by the casing 1 of the heating-drum. This choking of the passage 15 interferes with the draft through the circulation-chamber of the drum, and to provide for readily cleaning the drum of such accumulations of soot I provide the cleaningorifice 13 at the lower part of the casing 1, which orifice is designed to be closed by a suitable cover 14, which provides for access to the interior of the drum for readily removing the deposits of soot therein.

While I have shown and described the upper head 4 of the heating-drum as provided with the pipe holes or nipples 5 6 on opposite sides of the discharge-mouth of the central air or heating chamber 9, I do not limit myself to the provision of the two pipe holes or nipples in said upper head, because I am aware that the drum-casing 1 may itself be provided with the outlet orifice or nipple 10, said outlet orifice or nipple being situated on the opposite side of the heating-chamber 9 from the inlet pipe hole or nipple 5, all as indicated by dotted lines in Fig. 2 of the drawings.

In the practical service of my heatingdrum it is placed within the room or apartment to be heated and an inlet or supply pipe is connected to the pipe hole or nipple 5 to convey waste heat and products of combustion from a stove, furnace, or other heater to the circulating-chamber of the drum, while an offbearing exit-pipe is attached to the outlet-nipple 6 or 16, situated on the drum opposite to the pipe hole or nipple 5. The waste heat and products of combustion are caused to circulate from the inlet 5 down one side of the chamber of the casing 1, through the passage 15 beneath the air-heating chamber 9, and up the other side of the circulation-chamber of said casing 1 to the outlet 6 or 16. The products of combustion in their circulation through the casing 1 impinge against the radial tubes or fines 11 and the walls of the chamber 9, thus heating the latter and creating an updraft through the chamber 9 from the air-inlet tube 12 to the open mouth of said chamber. The circulation of air through said chamber 9 creates an inward suction of air through theradial fiues 11, and the air passing through said fines and the chamber 9 in contact with the walls thereof is heated prior to its discharge through the open mouth of said chamber 9.

From the foregoing description, taken in connection with the drawings, it will be seen that I have provided a simple construction of heating-drum in which the chamber and the fines are arranged compactly with relation to each other to secure an extended area'of heating-surface for properly warming the air as it circulates through the drum, and the walls of said chamber 9 and the radial fines are exposed to-intimate contact with the waste heat and products of combustion to be heated thereby to the best advantage. The circulation-chamber of the heating-drum can read ily be cleaned from accumulations of soot through the orifice 13, after which the door 14 should be closed to securely close said cleaning-orifice and prevent interference with the circulation of smoke, &c., through the drum.

It is evident that changes in the form and proportion of parts may be made by a skilled ing spaces and joined to said drum-shell and the partitions, 7, 8, a smoke-inlet at the upper end of the drum and on one side of the air-chamber, and a smoke-outlet on the opposite side of the air-chamber and at the upper end of the drum, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aifixed my signature in the presence of two Witnesses.

LUTHER V. HOLLAND.

Witnesses:

DAYTON B. LOVELACE, JEFFERSON D. SITTON. 

